Thumb-tack



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V APPLICATION FILED DEC 3. I919 Reissued Mar. 2, 1920.

UNITED STATES PATENT OFFICE.

PATRICK C. NESTOR, 0F PHILADELPHIA, PENNSYLVANIA.

THUMB-TACK.

Specification of Reissued Letters Patent. Reissued Mar. 2, 1920.

Original 1T0. 1,320,901, dated November 4, 1919, Serial No. 199,320,filed October 30, 1917. Application for reissue filed December 3, 1919.Serial No. 342,807.

To all whom it may concern Be it known that I, PATRICK C. NnsToR, acitizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and usefulThumb-Tack, of which the vfollowing is a specification.

proceeds, the invention resides in the combination and arrangement ofparts and in the details of construction hereinafter described andclaimed, it being understood that changes in the precise embodiment ofthe invention herein disclosed can be made within the scope of what isclaimed without departing from the spirit of the invention.

n the accompanying drawings the preferred form of the invention has beenshown.

In said drawings Figure 1 is a plan view of the thumb tack embodying thepresent improvements.

Fig. 2 is a central section therethrough.

Fig. 3 is a view similar to Fig. 2 but showin a modified structure.

ferring to the figures by characters of reference 1 designates thepointed stem of the tack, the same being provided with a dished orconcave convex head 2. Formed in this head at diametrically opposedpoints as shown in Fig. 1.

It will be apparent that the thumbtack can be pressed into a board inthe ordinary manner. When it is desired to remove it,

' it is merely necessary to insert the finger shown in Figs. 1 and 2.

nails into the slots 3 and to pull u wardly.

The nails will enter the head end a ove the and bottom of the head andthe slots 5 are I formed in this shoulder. With this arrangement it iseasier to insert the nails of the fingers than with an arrangement suchas However both forms can be used efiiciently.

What is claimed is:

1; A thumb tack including a concavo-con vex disk of uniform thicknessprovided with opposed arcuate slots, the opposed edges of that portionof the disk between the slots being convex from end to end and spacedabove the plane occupied by the marginal portion of the disk, thereby toprovide finger nail receiving spaces.

2. A thumb tack including a concavo-convex disk of uniform thicknessprovided with a central raised portion forming an annular ception offinger nails, the inner edges of the slots being eccentrically disposedrelative to the disk and spaced from the plane occupied by the margin ofthe disk.

3. A thumb tack including a disk provided with opposed arcuate slots,the opposed edges of that portion of the disk beare slots 3 preferablyeccentrically arranged PATRICK 0. NES OR.

